Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723
Advanced
AMS4041
Monolithic
MICROPOWER SHUNT VOLTAGE REFERENCE
Systems
FEATURES
APPLICATIONS
Tight Output Voltage Tolerance
Battery Powered Systems
Low Output Noise
Instrumentation
Operating Current 60
A to 100mA
Energy Management
Low Dynamic Impedance
Automotive
Low Temperature Coefficient
Precision Audio Components
Available in the sub-miniature SOT-23 Package
Product Testing
2.5V Device ( AMS4040) also available
Data Acquisition Systems
GENERAL DESCRIPTION
The AMS4041 is a two-terminal micropower band-gap voltage reference diode featuring a very low dynamic impedance and
good temperature coefficient, operating over a 60
A to 100mA current range. On-chip trimming is used to provide tight
voltage tolerance. Since the AMS4041 band-gap reference uses only transistors and resistors, low noise and good long term
stability result. The wide dynamic operating range allows its use with widely varying supplies with excellent regulation. The
extremely low power drain of the AMS4041 makes these reference diodes useful for micropower circuitry. These voltage
references can be used to make portable meters, regulators or general purpose analog circuitry with battery life approaching
shelf life.
The AMS4041 is operational in the full industrial temperature range of -40
C to 85
and is available in small space saving
TO-92, SO-8, SOT-89 and SOT-23 packages.
ORDERING INFORMATION
:
TOL.
PACKAGE TYPE
OPERATING
TO-92
8 LEAD SOIC
SOT-89
3 LEAD SOT-23
TEMP. RANGE
0.25%
AMS4041AN
AMS4041AS
AMS4041AL
AMS4041AM
-40 to +85
C
0.5%
AMS4041BN
AMS4041BS
AMS4041BL
AMS4041BM
-40 to +85
C
1.0%
AMS4041CN
AMS4041CS
AMS4041CL
AMS4041CM
-40 to +85
C
PIN CONNECTIONS
TO-92
8L SOIC
SOT-89
3L SOT-23
Plastic Package (N)
SO Package (S)
(L)
(M)
1
2
3
-
+
N/C
N/C
N/C
N/C
N/C
N/C
N/C
+
-
1
2
8
4
3
7
5
6
1
2
3
+
-
3 *
2
1
*This pin must be left floating
or connected to pin 2
Bottom View
Top View
Top View
Top View
Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723
AMS4041
ABSOLUTE MAXIMUM RATINGS (Note 1)
Reverse Current
100mA
Internal Power Dissipation (P
D
)
Forward Current
10mA
TO-92 Package
0.78W
Storage temperature
-65
C to +150
C
SO-8 Package
0.71W
Lead Temperature
SOT-89 Package
0.91W
TO-92 package (Soldering 10 sec.)
265
C
SOT-23 Package
0.28W
SO-8 and SOT-23 packages:
Thermal Resistance (
JA
)
Vapor phase (60 sec)
215
C
TO-92 Package
160
C/W
Infrared (15 sec.)
220
C
SO-8 Package
175
C/W
SOT-89 package (Soldering 10 sec.) 265
C
SOT-89 Package
110
C/W
SOT-23 Package
410
C/W
Note1:
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. For guaranteed specifications and test conditions, see the
Electrical Characteristics
.
The guaranteed specifications apply only for the test conditions listed.
ELECTRICAL CHARACTERISTICS
Electrical Characteristics at I
R
=100
A and T
A
= +25C unless otherwise specified.
Parameter
Conditions
AMS4041A
Min Typ Max
AMS4041B
Min Typ Max
AMS4041C
Min Typ Max
Units
Reverse Breakdown
Voltage
1.222
1.225
1.228
1.219
1.225
1.231
1.213
1.225
1.237
V
Deviation of Reverse
Breakdown Voltage over
Temperature
T
A
= Full Range
8.0
17
8.0
17
8.0
25
mV
Reverse Breakdown
Voltage Change with
I
RMIN
I
R
1mA
0.7
1.5
2.0
0.7
1.5
2.0
0.7
2.0
2.5
mV
Operating Current
Change
1mA
I
R
15mA
4.0
6.0
8.0
2.5
6.0
8.0
2.5
8.0
10.0
mV
Reverse Breakdown
Voltage Long Term
Stability
T
A
=25C.1C
T = 1000 Hr
120
120
120
ppm
Wide Band Noise
10HZ
f
10kHz
20
20
20
V
rms
Reverse Dynamic
Impedance
I
R
= 1mA, f = 120Hz,
I
AC
= 0.1I
R
0.5
1.5
0. 5
1.5
0.5
2.0
Minimum Operating
Current
60
80
100
60
80
100
60
80
100
A
Parameters identified with boldface type apply at temperature extremes. All other numbers apply at T
A
= T
J
= 25C.
TYPICAL APPLICATIONS
Shunt Regulator
AMS4041
I
Q
I
Q
+ I
L
I
L
R
S
V
R
V
S
Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723
AMS4041
TYPICAL APPLICATIONS
Precision 1
A to 1mA Current Sources
8
4
3
2
+
-
1/2
LMC6062
1
AMS4041
R2
R1
20k
-15V
-1.0V TO -12V
I
OUT
*
I
OUT
=1.2V/R2
8
4
3
2
+
-
1/2
LMC6062
1
R2
R1
20k
12V
1.0V TO 12V
I
OUT
*
AMS4041
Programmable Current Source
4
2
3
-
+
1
0.1
F
-
+
1/2
LMC6062
1/2
LMC6062
30
k
12V
12
A
OUT
123
, 0.5%
AMS4041
+12V
7
6
5
8
ANA
GND
INPUT
2
LF13006
LF13007
DIGITAL
CONTROL
I
OUT
I
OUT
= 1.2V/123
(1/
gain set #)
Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723
AMS4041
START-UP CHARACTERISTICS
AMS4041
V
R
R
S
V
IN
1Hz rate
Test circuit
V
R
(V)
V
IN
(V)
5
0
3
2
1
0
0
20
40
60
80
R
S
= 30 k
AMS4041
T
J
= 25C
RESPONSE TIME (
s)
TYPICAL PERFORMANCE CHARACTERISTICS
-40
-20
0
20
40
60
80
-0.5
+0.5
0
100
-0.1
-0.2
-0.3
-0.4
+0.4
+0.3
+0.2
+0.1
Temperature Drift for Different
Average Temperature Coefficient
TEMPERATURE ( C)
V
R
CHANGE (%)
I
R
= 150
A
0
0.4
0.8
1.2
1.6
0
80
40
Reverse Characteristics and
Minimum Operating Current
2.0
REVERSE VOLTAGE (V)
REVERSE CURRENT (
A)
20
100
0.1
1
10
100
1k
100
1k
10k
100k
Ouput Impedance vs Frequency
FREQUENCY (Hz)
NOISE (mV/
Hz)
1M
0.1
1
10
100
1k
100
1k
10k
100k
FREQUENCY (Hz)
1M
1
10
100
1k
10k
Noise Voltage vs Frequency
100k
FREQUENCY (Hz)
IMPEDANCE (
)
T
J
=25 C,
I
R
= 0.1I
R
I
R
= 150
A
IMPEDANCE (
)
Ouput Impedance vs Frequency
60
+12ppm/ C
-51ppm/ C
-22ppm/ C
I
R
= 1mA
T
J
=25 C,
I
R
= 0.1I
R
C
L
= 0
C
L
= 1
F
TANTALUM
C
L
= 1
F
TANTALUM
C
L
= 0
XC
L
XC
L
0
600
200
1000
800
T
J
=25 C
400
T
J
=25 C
I
R
= 200
A
Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723
AMS4041
PACKAGE DIMENSIONS
inches (millimeters) unless otherwise noted.
3 LEAD TO-92 PLASTIC PACKAGE (N)
8 LEAD SOIC PLASTIC PACKAGE (S)
0.1400.010
(3.5560.127)
0.0600.010
(1.5240.254)
0.0150.002
(0.3810.051)
0.0160.003
(0.4060.076)
0.0500.005
(1.2700.127)
0.0600.005
(1.5240.127)
DIA
0.1800.005
(4.5720.127)
0.1800.005
(4.5720.127)
0.050
(1.270)
MAX
0.500
(12.70)
MIN
UNCONTROLLED
LEAD DIMENSIONS
10
NOM
5 NOM
N (TO-92 ) AMS DRW# 042391
0.90
(2.286)
NOM
0-8 TYP
0.010-0.020
(0.254-0.508)
S (SO-8 ) AMS DRW# 042293
x 45
0.016-0.050
(0.406-1.270)
0.008-0.010
(0.203-0.254)
0.004-0.010
(0.101-0.254)
0.014-0.019
(0.355-0.483)
0.053-0.069
(1.346-1.752)
0.050
(1.270)
TYP
0.150-0.157**
(3.810-3.988)
0.228-0.244
(5.791-6.197)
0.189-0.197*
(4.801-5.004)
*DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
**DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD
FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
1
2
3
4
8
7
6
5
Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723
AMS4041
PACKAGE DIMENSIONS
inches (millimeters) unless otherwise noted (Continued).
SOT-89 PLASTIC PACKAGE (L)
3 LEAD SOT-23 PLASTIC PACKAGE (M)
0.090-0.102
(2.29-2.60)
0.173-0.181
(4.40-4.60)
0.064-0.072
(1.62-1.83)
0.155-0.167
(3.94-4.25)
0.059
(1.50)
BSC
0.035-0.047
(0.89-1.20)
L (SOT-89 ) AMS DRW# 042392
0.118
(3.00)
BSC
0.014-0.019
(0.36-0.48)
0.017-0.022
(0.44-0.56)
0.084-0.090
(2.13-2.29)
0.055-0.063
(1.40-1.60)
0.014-0.017
(0.35-0.44)
0.047-0.055
(1.194-1.397)
0.015-0.017
(0.381-0.432)
0.110-0.120
(2.794-3.048)
0.083-0.098
(2.108-2.489)
0.035-0.040
(0.889-1.016)
0.070-0.080
(1.778-2.032)
0.018-0.024
(0.457-0.610)
10
NOM
0.0034-0.0050
(0.086-0.127)
(SOT-23 ) AMS DRW# 051991
0.035-0.041
(0.089-1.041)
0.0005-0.0040
(0.013-0.102)
0.018-0.024
(0.457-0.610)
10
NOM
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